CN105781877B - Shutdown control method, device and system of wind generating set - Google Patents
Shutdown control method, device and system of wind generating set Download PDFInfo
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- CN105781877B CN105781877B CN201610125683.2A CN201610125683A CN105781877B CN 105781877 B CN105781877 B CN 105781877B CN 201610125683 A CN201610125683 A CN 201610125683A CN 105781877 B CN105781877 B CN 105781877B
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- 238000010248 power generation Methods 0.000 claims description 7
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- 210000003746 feather Anatomy 0.000 description 7
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- 238000004364 calculation method Methods 0.000 description 3
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- 238000005516 engineering process Methods 0.000 description 3
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/10—Purpose of the control system
- F05B2270/103—Purpose of the control system to affect the output of the engine
- F05B2270/1032—Torque
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Sustainable Energy (AREA)
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Eletrric Generators (AREA)
- Wind Motors (AREA)
Abstract
The embodiment of the invention provides a method, a device and a system for controlling the shutdown of a wind generating set, wherein the method comprises the following steps: executing torque control operation in the propeller retracting process; stopping retracting the propeller when the blades reach the feathering position; wherein the torque control operation comprises: and acquiring a current generator rotating speed value of the wind generating set, determining a corresponding generator torque demand value according to the current generator rotating speed value, and executing torque control on the generator according to the torque demand value. By adopting the technical scheme of the invention, in the stopping process, the corresponding generator torque demand value is determined according to the value of the rotating speed of the generator, and the torque control is carried out on the generator according to the torque demand value, so that the torque control of the generator is more reasonable, the pneumatic unbalance force borne by the impeller is inhibited, the stopping process is smoother, and the complete machine limit load of the fan can be effectively inhibited.
Description
Technical field
The present invention relates to technical field of wind power generation more particularly to a kind of halt control method of wind power generating set, dresses
It sets and system.
Background technology
When wind power generating set (hereinafter referred to as unit) breaks down at present, need to carry out emergency shutdown to unit.Tight
During emergency stop machine, it is reduced rapidly since frequency converter disconnects unit load, wind speed round rapid increase, while quick feathering is (i.e.
Put away the oars), in order to avoid propeller pitch angle it is too fast increase cause unit to be subject to shock loading it is excessive, common halt mode is to be closed
Ring pitch control, i.e., in stopping process, setting unit stops putting away the oars when meeting certain condition, and enters wait state, is waiting
Wait for that the wheel speed under state according to detection judges whether to continue to put away the oars, to reduce shock loading.
In above-mentioned stopping process, generator torque is smaller by direct zero setting or its value after failure triggering, thus can not
Effectively inhibit the larger ultimate load brought to unit due to pneumatic out-of-balance force, causes wind turbine development cost excessively high or even meeting
Cause wind turbine that can not develop.
Invention content
The object of the present invention is to provide a kind of halt control method of wind power generating set, apparatus and systems, are shutting down
In the process, moment of torsion control is carried out to generator so that stopping process is more smooth, so as to effectively inhibit the complete machine pole of wind turbine
Limit for tonnage lotus, to reduce the development cost of unit and improve the safety of unit.
According to an aspect of the present invention, a kind of halt control method of wind power generating set is provided, the method includes：
Moment of torsion control operation is executed during putting away the oars；When blade reaches feathering position, stop putting away the oars；Wherein, the moment of torsion control operation
Including：The value for obtaining the current generator rotating speed of the wind power generating set is determined according to the value of the current generator rotating speed
Corresponding generator torque requirements, and moment of torsion control is executed to generator according to the torque demand value.
Further, the value according to the current generator rotating speed determines the place of corresponding generator torque requirements
Reason includes：Corresponding generator torque requirements are calculated according to the torque arithmetic relational expression.
Further, corresponding torque arithmetic relational expression is searched according to the value of current generator rotating speed.
Further, when the value of the current generator rotational speed omega m is less than or equal to [0] xx, according to Torquedem=yy
[0] the generator torque requirements Torquedem is calculated；Alternatively, the value ω m when the current generator rotating speed are more than xx
When [0] and less than or equal to [1] xx, according to Torquedem=(ω m-xx [0])/(xx [1]-xx [0]) * (yy [1]-yy [0])
+ yy [0] calculates the generator torque requirements Torquedem；Alternatively, the value ω m when the current generator rotating speed are more than
Xx [1] and less than or equal to [2] xx when, according to Torquedem=(ω m-xx [1])/(xx [2]-xx [1]) * (yy [2]-yy
[1])+yy [1] calculates the generator torque requirements Torquedem；Alternatively, as the value ω m of the current generator rotating speed
When more than xx [2] and less than or equal to [3] xx, according to Torquedem=(ω m-xx [2])/(xx [3]-xx [2]) * (yy [3]-
Yy [2])+yy [2] the calculating generator torque requirements Torquedem；Alternatively, as the value ω of the current generator rotating speed
When m is more than [3] xx, the generator torque requirements Torquedem is calculated according to Torquedem=yy [3]；Wherein, [0] xx
For the minimum speed of generator, yy [0] is generator torque value corresponding with value xx [0] of generator speed；Xx [1] is power generation
Machine obtains the minimum speed of rated power, and yy [1] is generator torque value corresponding with value xx [1] of generator speed；xx[2]
For the rated speed of generator, yy [2] is generator torque value corresponding with value xx [2] of generator speed；Xx [3] is power generation
The maximum (top) speed of machine, yy [3] are generator torque value corresponding with value xx [3] of generator speed；Any generator speed
Value and the value of corresponding torque demand meet the following conditions：Its product is less than or equal to the rated power of the generator.
Further, the method further includes：It puts away the oars according to constant rate of speed.
According to another aspect of the present invention, a kind of stop control apparatus of wind power generating set, described device packet are also provided
It includes：Torque management module, the value of the current generator rotating speed for obtaining the wind power generating set during putting away the oars, according to
The value of the current generator rotating speed determines corresponding generator torque requirements, and according to the torque demand value to power generation
Machine executes moment of torsion control；Control module is shut down, for when blade reaches feathering position, sending the control signal that stops putting away the oars.
Further, the torque management module is specifically used for being calculated according to the torque arithmetic relational expression corresponding
Generator torque requirements.
Further, the torque management module is specifically used for searching corresponding torque according to the value of current generator rotating speed
Calculation relational expression.
Further, the torque management module is specifically used for：When the value of the current generator rotational speed omega m is less than or equal to
When [0] xx, the generator torque requirements Torquedem is calculated according to Torquedem=yy [0]；Alternatively, when described current
When the value ω m of generator speed are more than xx [0] and are less than or equal to [1] xx, according to Torquedem=(ω m-xx [0])/(xx
[1] [0]-xx) * (yy [1]-yy [0])+yy [0] calculating generator torque requirements Torquedem；Alternatively, working as when described
The value ω m of preceding generator speed be more than xx [1] and less than or equal to [2] xx when, according to Torquedem=(ω m-xx [1])/
(xx [2]-xx [1]) * (yy [2]-yy [1])+yy [1] calculates the generator torque requirements Torquedem；Alternatively, working as institute
The value ω m of current generator rotating speed are stated more than xx [2] and when being less than or equal to [3] xx, according to Torquedem=(ω m-xx
[2])/(xx [3]-xx [2]) * (yy [3]-yy [2])+yy [2] calculates the generator torque requirements Torquedem；Alternatively,
When the value ω m of the current generator rotating speed are more than [3] xx, the generator torque is calculated according to Torquedem=yy [3]
Requirements Torquedem；Wherein, xx [0] is the minimum speed of generator, and yy [0] is corresponding with value xx [0] of generator speed
Generator torque value；Xx [1] is the minimum speed that generator obtains rated power, and yy [1] is the value xx with generator speed
[1] corresponding generator torque value；Xx [2] is the rated speed of generator, and yy [2] is right with the value xx [2] of generator speed
The generator torque value answered；Xx [3] is the maximum (top) speed of generator, and yy [3] is hair corresponding with value xx [3] of generator speed
Motor torque values；The value of any generator speed and the value of corresponding torque demand meet the following conditions：Its product is less than or equal to
The rated power of the generator.
Further, the shutdown control module is carried out specifically for controlling the wind power generating set according to constant rate of speed
It puts away the oars.
According to another aspect of the present invention, a kind of shutdown control system of wind power generating set, the system packet are also provided
Include pitch-controlled system and foregoing device；The pitch-controlled system, which is used to receive the stopping that described device is sent and puts away the oars to control, to be believed
Number.
The halt control method of wind power generating set provided in an embodiment of the present invention, apparatus and system, relative to existing skill
Generator torque decaying is very fast after compressor emergency shutdown in art, to which impeller bears larger pneumatic out-of-balance force, is easy that unit is made to produce
The scheme of raw larger ultimate load, the present invention determine corresponding hair in stopping process, according to the value of the generator speed
Motor torque requirements, and moment of torsion control is executed to generator according to the torque demand value, so that generator torque
Control pneumatic out-of-balance force that is more reasonable, and inhibiting impeller to bear so that stopping process is more smooth, so as to have
Effect inhibits the complete machine ultimate load of wind turbine.
Description of the drawings
Fig. 1 shows the flow diagram of the halt control method of the wind power generating set of the embodiment of the present invention one；
Fig. 2 shows the flow diagrams of the halt control method of the wind power generating set of the embodiment of the present invention two；
Fig. 3 shows the flow diagram of the halt control method of the wind power generating set of the embodiment of the present invention three；
Fig. 4 shows the structural schematic diagram of the stop control apparatus of the wind power generating set of the embodiment of the present invention four.
Specific implementation mode
The halt control method of detailed description of the present invention wind power generating set, apparatus and system show below in conjunction with the accompanying drawings
Example property embodiment.In following embodiment signified stopping process refer in addition to wind power generating set due to external off-grid or by
It is that failure leads to not execute generator the stopping process except moment of torsion control that certain, which occurs, in current transformer.
Embodiment one
Fig. 1 shows the flow diagram of the halt control method of the wind power generating set of the embodiment of the present invention one, please refers to
The halt control method of Fig. 1, wind power generating set includes：S110, S120 and S130.
In S110, the value of the current generator rotating speed of the wind power generating set is obtained during putting away the oars, according to described
The value of current generator rotating speed determines corresponding generator torque requirements, and is held to generator according to the torque demand value
Row moment of torsion control.
In the present embodiment, after detecting that wind power generating set breaks down into stopping process, pitch-controlled system is controlled
It is put away the oars with constant pitch rate, which can be determined according to the empirical value of unit maintenance personnel,
It can be determined according to the load of unit, for example, constant pitch rate can be 4deg/s.Wherein, the failure include but
Be not limited to generator overrun it is stuck etc. with single blade.
Stopping process in the present embodiment is continuously put away the oars with constant pitch rate, belongs to the process of opened loop control, phase
It can enter wait state up to continuing the shutdown side to put away the oars after meeting certain condition in the prior art, during putting away the oars for certain
Formula, the technical solution of the present embodiment avoid unit in the wait state and meet with situations such as strong gusts of wind etc. makes the load bigger of unit
Appearance, safety and reliability higher.Meanwhile using the technical solution of the present embodiment, during compressor emergency shutdown is put away the oars, nothing
The condition for continuing to put away the oars need to be detected, when the case where so as to avoid can not accurately detect the condition for continuing to put away the oars in stopping process
Cause unit not shut down in the intended manner, there is the risk for increasing rack load instead, improve compressor emergency shutdown can
Operability.
In S120, determine whether the blade of the wind power generating set is in feather position, if wind power generating set
Blade is in feather position, then executes S130；If the blade of wind power generating set is not in feather position, continue to execute
S110。
In S130, stop putting away the oars.
The halt control method of wind power generating set provided in an embodiment of the present invention, compared with the existing technology in compressor emergency shutdown
Generator torque decaying is very fast afterwards, to which impeller bears larger pneumatic out-of-balance force, is easy that unit is made to generate the larger limit
The scheme of load, the present invention determine corresponding generator torque demand in stopping process, according to the value of the generator speed
Value, and moment of torsion control is executed to generator according to the torque demand value, so that generator torque control is more reasonable,
And the pneumatic out-of-balance force for inhibiting impeller to bear so that stopping process is more smooth, so as to effectively inhibit wind turbine
Complete machine ultimate load.
Embodiment two
Fig. 2 shows the flow diagrams of the halt control method of the wind power generating set of the embodiment of the present invention two, please refer to
The halt control method of Fig. 2, wind power generating set includes：S210, S220 and S230, wherein in S220 and embodiment one
S120 is identical, and S230 is identical as the S130 in embodiment one, and S210 is used to specifically execute in embodiment one in the present embodiment
S110。
In S210, corresponding torque arithmetic relational expression is searched according to the value of current generator rotating speed；According to the torquemeter
It calculates relational expression and calculates corresponding generator torque requirements.
In the present embodiment, preset rotation speed range includes 0~xx [0], xx [0]~xx [1], xx [1]~xx [2], xx [2]
~xx [3] and be more than xx [3], wherein xx [0] be the minimum speed of generator, xx [1] be generator acquisition rated power most
Small rotating speed, the rated speed that xx [2] is generator and maximum (top) speed that xx [3] is generator, wherein the minimum of generator turns
The maximum (top) speed of speed and generator is set when being generator manufacture, since xx [3] is generator when generator designs
Maximum (top) speed, when unit breaks down, the actual speed of generator is possible to that xx [3] can be more than.
Torque arithmetic relational expression is linear relation in the present embodiment, specifically, within the scope of different preset rotation speeds,
The corresponding slope of a curve of linear relation can be different, in the torque arithmetic relational expression, the value of any generator speed
And corresponding torque value meets the following conditions：Its product is less than or equal to the rated power of the generator.
In S220, determine whether the blade of the wind power generating set is in feather position, if wind power generating set
Blade is in feather position, then executes S230；If the blade of wind power generating set is not in feather position, continue to execute
S210。
In S230, stop putting away the oars.
Embodiment three
Fig. 3 shows the flow diagram of the halt control method of the wind power generating set of the embodiment of the present invention three, this implementation
Example is the concrete application of the halt control method of the wind power generating set of embodiment one and embodiment two, in the present embodiment, wind
The blade of power generator group stops indicating more than or equal to 88 degree to the propeller pitch angle of feather position blade, please refers to Fig. 3, wind
The halt control method of power generator group includes：S301、S302、S303、S304、S305、S306、S307、S308、S309、
S310, S311 and S312.
In S301, unit, which breaks down, is shut down, and control pitch-controlled system is put away the oars according to pre-set constant rate.
In S302, the generator speed ω m after current filter are obtained.
In S303, judge whether generator speed is less than or equal to xx [0], if it is, S304 is executed, if it is not, then holding
Row S305.
It is generator torque requirements in S304, Torquedem=yy [0], wherein Torquedem, xx [0] is generator
Minimum speed, yy [0] is the generator torque value when value of generator speed is equal to [0] xx, and xx [0] is multiplied by yy [0] and is less than
Equal to the rated power of generator.
In S305, judge whether generator speed is more than xx [0] and is less than or equal to xx [1], if it is, executing S306, such as
Fruit is no, then executes S307.
In S306, Torquedem=(ω m-xx [0])/(xx [1]-xx [0]) * (yy [1]-yy [0])+yy [0] wherein,
Xx [1] is the minimum speed that generator obtains rated power, and yy [1] is equal to generator when [1] xx for the value of generator speed
Torque value, xx [1] are multiplied by the rated power that yy [1] is less than or equal to generator.
In S307, judge whether generator speed is more than xx [1] and is less than or equal to xx [2], if it is, executing S308, such as
Fruit is no, then executes S309.
In S308, Torquedem=(ω m-xx [1])/(xx [2]-xx [1]) * (yy [2]-yy [1])+yy [1], wherein
Xx [2] is the rated speed of generator, and yy [2] is equal to generator torque value when [2] xx, xx [2] for the value of generator speed
It is multiplied by the rated power that yy [2] is less than or equal to generator.
In S309, judge whether generator speed is more than xx [2] and is less than or equal to xx [3], if it is, executing S3010, such as
Fruit is no, then executes S311.
In S310, Torquedem=(ω m-xx [2])/(xx [3]-xx [2]) * (yy [3]-yy [2])+yy [2] wherein,
Xx [3] is the maximum (top) speed of generator, and yy [3] is equal to generator torque value when [3] xx, xx [3] for the value of generator speed
It is multiplied by the rated power that yy [3] is less than or equal to generator.
In S311, Torquedem=yy [3].
In S312, judge whether the propeller pitch angle of blade is more than 88 degree, if it is terminates the processing of this method, if not,
Then return to S302.
Generator torque requirements can be calculated by the linear relation in above S302~S311, due to xx
[0], xx [1], xx [2], xx [3], yy [0], yy [1], yy [2], yy [3] are rule of thumb and to need reduction rack load pre-
If numerical value therefore can be previously obtained the table of comparisons of each generator speed and generator torque requirements, actually shut down control
It is not necessarily to be calculated in real time during system, directly searches the table of comparisons, it is convenient and efficient, it is efficient.
Example IV
Fig. 4 shows the structural schematic diagram of the stop control apparatus of the wind power generating set of the embodiment of the present invention four, this implementation
The stop control apparatus of wind power generating set in example is used to execute the shutdown control of wind power generating set in embodiment one to three
Method.Fig. 4 is please referred to, the stop control apparatus of wind power generating set includes torque management module 410 and shutdown control module
420。
Torque management module 410, the current generator rotating speed for obtaining the wind power generating set during putting away the oars
Value, corresponding generator torque requirements are determined according to the value of the current generator rotating speed, and according to the torque need
Evaluation executes moment of torsion control to generator.
Control module 420 is shut down, for when blade reaches feathering position, sending the control signal that stops putting away the oars.
Further, the torque management module is specifically used for being calculated according to the torque arithmetic relational expression corresponding
Generator torque requirements.
Further, the torque management module is specifically used for searching corresponding torque according to the value of current generator rotating speed
Calculation relational expression.
Further, the torque management module is specifically used for：
When the value of the current generator rotational speed omega m is less than or equal to [0] xx, institute is calculated according to Torquedem=yy [0]
State generator torque requirements Torquedem.
Alternatively, when the value ω m of the current generator rotating speed are more than xx [0] and are less than or equal to [1] xx, according to
Torquedem=(ω m-xx [0])/(xx [1]-xx [0]) * (yy [1]-yy [0])+yy [0] calculates the generator torque and needs
Evaluation Torquedem.
Alternatively, when the value ω m of the current generator rotating speed are more than xx [1] and are less than or equal to [2] xx, according to
Torquedem=(ω m-xx [1])/(xx [2]-xx [1]) * (yy [2]-yy [1])+yy [1] calculates the generator torque and needs
Evaluation Torquedem.
Alternatively, when the value ω m of the current generator rotating speed are more than xx [2] and are less than or equal to [3] xx, according to
Torquedem=(ω m-xx [2])/(xx [3]-xx [2]) * (yy [3]-yy [2])+yy [2] calculates the generator torque and needs
Evaluation Torquedem.
Alternatively, when the value ω m of the current generator rotating speed are more than [3] xx, calculated according to Torquedem=yy [3]
The generator torque requirements Torquedem.
Wherein, xx [0] is the minimum speed of generator, and yy [0] is generator corresponding with value xx [0] of generator speed
Torque value；Xx [1] is the minimum speed that generator obtains rated power, and yy [1] is corresponding with value xx [1] of generator speed
Generator torque value；Xx [2] is the rated speed of generator, and yy [2] is generator corresponding with value xx [2] of generator speed
Torque value；Xx [3] is the maximum (top) speed of generator, and yy [3] is generator torque corresponding with value xx [3] of generator speed
Value.
The value of any generator speed and the value of corresponding torque demand meet the following conditions：Its product is less than or equal to described
The rated power of generator.
Further, the shutdown control module is carried out specifically for controlling the wind power generating set according to constant rate of speed
It puts away the oars.
The stop control apparatus of wind power generating set in the present embodiment can be integrated in the PLC of wind power generating set,
It is controlled during wind power generating set emergency shutdown, moment of torsion control is carried out to generator and sends out stopping putting away the oars control
Signal；Optionally, which can also be integrated in the inverter controller of wind power generating set, pass through current transformer
System carries out moment of torsion control to generator.
The stop control apparatus of wind power generating set provided in an embodiment of the present invention, compared with the existing technology in compressor emergency shutdown
Generator torque decaying is very fast afterwards, to which impeller bears larger pneumatic out-of-balance force, is easy that unit is made to generate the larger limit
The scheme of load, the present invention determine corresponding generator torque demand in stopping process, according to the value of the generator speed
Value, and moment of torsion control is executed to generator according to the torque demand value, so that generator torque control is more reasonable,
And the pneumatic out-of-balance force for inhibiting impeller to bear so that stopping process is more smooth, so as to effectively inhibit wind turbine
Complete machine ultimate load.
Embodiment five
The present invention also provides a kind of shutdown control systems of wind power generating set, and the system comprises pitch-controlled system and realities
Apply the device described in example four；Pitch-controlled system be used for receive described device transmission stopping put away the oars control signal.
It is above-mentioned to be realized in hardware, firmware according to the method for the present invention, or be implemented as being storable in recording medium
Software or computer code in (such as CD ROM, RAM, floppy disk, hard disk or magneto-optic disk), or it is implemented through network download
Original storage in long-range recording medium or nonvolatile machine readable media and the meter that will be stored in local recording medium
Calculation machine code, to which method described here can be stored in using all-purpose computer, application specific processor or may be programmed or special
It is handled with such software in the recording medium of hardware (such as ASIC or FPGA).It is appreciated that computer, processor, micro-
Processor controller or programmable hardware include can store or receive software or computer code storage assembly (for example, RAM,
ROM, flash memory etc.), when the software or computer code are by computer, processor or hardware access and execute, realize herein
The processing method of description.In addition, when all-purpose computer accesses the code for realizing the processing being shown here, the execution of code
All-purpose computer is converted into the special purpose computer for executing the processing being shown here.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (7)
1. a kind of halt control method of wind power generating set, which is characterized in that the method includes：
Moment of torsion control operation is executed during putting away the oars；When blade reaches feathering position, stop putting away the oars；
Wherein, the moment of torsion control, which operates, includes：The value for obtaining the current generator rotating speed of the wind power generating set, according to institute
The value for stating current generator rotating speed determines corresponding generator torque requirements, and according to the torque demand value to generator
Moment of torsion control is executed,
Wherein, when the value of the current generator rotational speed omega m is less than or equal to [0] xx, according to torque arithmetic relational expression
Torquedem=yy [0] calculates the generator torque requirements Torquedem；
Alternatively, when the value ω m of the current generator rotating speed are more than xx [0] and are less than or equal to [1] xx, according to torque arithmetic
Relational expression Torquedem=(ω m-xx [0])/(xx [1]-xx [0]) * (yy [1]-yy [0])+yy [0] calculates the generator
Torque demand value Torquedem；
Alternatively, when the value ω m of the current generator rotating speed are more than xx [1] and are less than or equal to [2] xx, according to torque arithmetic
Relational expression Torquedem=(ω m-xx [1])/(xx [2]-xx [1]) * (yy [2]-yy [1])+yy [1] calculates the generator
Torque demand value Torquedem；
Alternatively, when the value ω m of the current generator rotating speed are more than xx [2] and are less than or equal to [3] xx, according to torque arithmetic
Relational expression Torquedem=(ω m-xx [2])/(xx [3]-xx [2]) * (yy [3]-yy [2])+yy [2] calculates the generator
Torque demand value Torquedem；
Alternatively, when the value ω m of the current generator rotating speed are more than [3] xx, according to torque arithmetic relational expression Torquedem=
Yy [3] calculates the generator torque requirements Torquedem；
Wherein, xx [0] is the minimum speed of generator, and yy [0] is generator torque corresponding with value xx [0] of generator speed
Value；Xx [1] is the minimum speed that generator obtains rated power, and yy [1] is power generation corresponding with value xx [1] of generator speed
Machine torque value；Xx [2] is the rated speed of generator, and yy [2] is generator torque corresponding with value xx [2] of generator speed
Value；Xx [3] is the maximum (top) speed of generator, and yy [3] is generator torque value corresponding with value xx [3] of generator speed；
The value of any generator speed and its corresponding torque value meet the following conditions：Its product is less than or equal to the generator
Rated power.
2. halt control method according to claim 1, which is characterized in that search phase according to the value of current generator rotating speed
The torque arithmetic relational expression answered.
3. halt control method according to claim 1, which is characterized in that the method further includes：
It puts away the oars according to constant rate of speed.
4. a kind of stop control apparatus of wind power generating set, which is characterized in that described device includes：
Torque management module, the value of the current generator rotating speed for obtaining the wind power generating set during putting away the oars, root
Corresponding generator torque requirements are determined according to the value of the current generator rotating speed, and according to the torque demand value to hair
Motor executes moment of torsion control；
Control module is shut down, for when blade reaches feathering position, sending the control signal that stops putting away the oars,
Wherein, the torque management module is specifically used for：
When the value of the current generator rotational speed omega m is less than or equal to [0] xx, according to torque arithmetic relational expression Torquedem=
Yy [0] calculates the generator torque requirements Torquedem；
Alternatively, when the value ω m of the current generator rotating speed are more than xx [0] and are less than or equal to [1] xx, according to torque arithmetic
Relational expression Torquedem=(ω m-xx [0])/(xx [1]-xx [0]) * (yy [1]-yy [0])+yy [0] calculates the generator
Torque demand value Torquedem；
Alternatively, when the value ω m of the current generator rotating speed are more than xx [1] and are less than or equal to [2] xx, according to torque arithmetic
Relational expression Torquedem=(ω m-xx [1])/(xx [2]-xx [1]) * (yy [2]-yy [1])+yy [1] calculates the generator
Torque demand value Torquedem；
Alternatively, when the value ω m of the current generator rotating speed are more than xx [2] and are less than or equal to [3] xx, according to torque arithmetic
Relational expression Torquedem=(ω m-xx [2])/(xx [3]-xx [2]) * (yy [3]-yy [2])+yy [2] calculates the generator
Torque demand value Torquedem；
Alternatively, when the value ω m of the current generator rotating speed are more than [3] xx, according to torque arithmetic relational expression Torquedem=
Yy [3] calculates the generator torque requirements Torquedem；
Wherein, xx [0] is the minimum speed of generator, and yy [0] is generator torque corresponding with value xx [0] of generator speed
Value；Xx [1] is the minimum speed that generator obtains rated power, and yy [1] is power generation corresponding with value xx [1] of generator speed
Machine torque value；Xx [2] is the rated speed of generator, and yy [2] is generator torque corresponding with value xx [2] of generator speed
Value；Xx [3] is the maximum (top) speed of generator, and yy [3] is generator torque value corresponding with value xx [3] of generator speed；
The value of any generator speed and the value of corresponding torque demand meet the following conditions：Its product is less than or equal to the power generation
The rated power of machine.
5. stop control apparatus according to claim 4, which is characterized in that the torque management module is specifically used for basis
The value of current generator rotating speed searches corresponding torque arithmetic relational expression.
6. stop control apparatus according to claim 4, which is characterized in that the shutdown control module is specifically used for control
The wind power generating set is put away the oars according to constant rate of speed.
7. a kind of shutdown control system of wind power generating set, which is characterized in that the system comprises pitch-controlled system and such as right
It is required that any devices of 4-6；The pitch-controlled system be used for receive described device transmission stopping put away the oars control signal.
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108119301B (en) * | 2016-11-30 | 2019-05-17 | 北京金风科创风电设备有限公司 | Shutdown control method and device of wind generating set |
| CN107152376B (en) * | 2017-06-29 | 2019-11-08 | 北京金风科创风电设备有限公司 | Method and system for stopping feathering of blades |
| CN109958575B (en) * | 2017-12-26 | 2020-07-14 | 北京金风科创风电设备有限公司 | Shutdown control method and device of wind generating set |
| CN108204336B (en) * | 2018-01-30 | 2019-08-02 | 北京金风科创风电设备有限公司 | Wind generating set stopping method and device, storage medium and computing device |
| CN110374807B (en) * | 2019-09-02 | 2021-02-26 | 中国船舶重工集团海装风电股份有限公司 | Soft shutdown control method for wind generating set and wind generating set |
| CN114109718B (en) * | 2021-11-24 | 2023-04-25 | 华能随县界山风电有限责任公司 | Load control method for wind turbine generator in shutdown state |
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